CN114156784B - Post-installation method of cable protection tube - Google Patents
Post-installation method of cable protection tube Download PDFInfo
- Publication number
- CN114156784B CN114156784B CN202111296093.3A CN202111296093A CN114156784B CN 114156784 B CN114156784 B CN 114156784B CN 202111296093 A CN202111296093 A CN 202111296093A CN 114156784 B CN114156784 B CN 114156784B
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- China
- Prior art keywords
- cable
- operation platform
- cable protection
- lifting
- jacket
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- 238000009434 installation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a rear installation method of a cable protection tube, which comprises the following steps: s1: an operation platform is erected at the positions of jacket legs and a cable-carrying walkway near the rear installation position of the cable protection tube; s2: welding a plurality of lifting lugs on jacket legs above an operation platform and below a block bottom deck respectively, and installing a clamping ring and a hoisting machine on each lifting lug; s3: conveying the segmented prefabricated cable protective tube to an operation platform, and then welding and assembling the segmented cable protective tube; s4: lifting the horizontally placed cable protection pipe from the operation platform by adopting a lifting machine, and then dismantling the operation platform; s5: opening a clamp which is arranged on the jacket leg in advance, adjusting the hoisting machinery to convert the cable protective tube into a state of being parallel to the jacket leg, gradually approaching the jacket leg, closing the clamp and fixing; the invention realizes the sectional lifting and the chain-pouring lifting in place, and the post-installation operation of the cable protection tube can be conveniently completed only by means of the chain-pouring and the like, thereby saving the cost and reducing the operation risk.
Description
Technical Field
The invention relates to the technical field of maintenance and transformation of ocean engineering platforms, in particular to a rear installation method of a cable protection pipe.
Background
In the service period of the ocean platform, some cable protection pipes are newly added on the original platform due to upgrading and transformation of the platform functions, and how to implement post-installation operation of the newly added cable protection pipes is a difficult technical problem.
The cable shield rear installation faces the following difficulties: firstly, the cable protection tube is longer in length and heavier in weight, and is not easy to integrally transport and hoist; secondly, the field operation space is narrow, a plurality of barriers exist near the rear installation position of the cable protection pipe, such as ship leaning pieces, vertical pipes, cableways, jacket legs, diagonal braces and the like, and the large floating crane is difficult to perform close-range operation; furthermore, the tugboat for transporting the cable protection pipe cannot be directly close to the jacket leg for construction operation, otherwise, the risk of collision between the tugboat and the jacket exists; finally, the installation position behind the cable protection tube is often far away from the platform crane, and the platform crane cannot be used for carrying out integral hoisting operation.
Therefore, the conventional post-installation method of the cable guard is to use a floating crane to hoist the cable guard to the vicinity of the position to be installed, and then use a chain block to accurately position the cable guard. The mounting method has the following problems: firstly, floating crane resources are needed to be input, and the cost is high; secondly, the process of turning from floating crane hoisting to inverted buckle hoisting by a chain hoist needs to be carried out, the risk is high, and the construction difficulty is high.
Disclosure of Invention
The invention aims to provide a rear installation method of a cable protection tube for sectionally lifting and hanging a chain block in place.
In order to solve the technical problems, the invention provides a post-installation method of a cable protective tube, which comprises the following steps:
s1: an operation platform is erected at the positions of jacket legs and a cable-carrying walkway near the rear installation position of the cable protection tube;
s2: welding a plurality of lifting lugs on jacket legs above an operation platform and below a block bottom deck respectively, and installing a clamping ring and a hoisting machine on each lifting lug;
s3: conveying the segmented prefabricated cable protective tube to an operation platform, and then welding and assembling the segmented cable protective tube;
s4: lifting the horizontally placed cable protection pipe from the operation platform by adopting a lifting machine, and then dismantling the operation platform;
s5: the clamp which is arranged on the jacket leg in advance is opened, the hoisting machinery is adjusted to convert the cable protective tube into the cable protective tube which is parallel to the jacket leg and is slowly close to the jacket leg, and the clamp is closed and fixed.
According to a preferred embodiment of the present invention, in the step S1, scaffolds and welding brackets are further installed at the jacket legs and the cableway.
According to a preferred embodiment of the present invention, in the step S2, the hoisting machine is a chain block.
According to a preferred embodiment of the invention, in said step S3, the length of each segment of the segmented pre-fabricated cable sheath is between 6 and 8 meters.
According to a preferred embodiment of the invention, in step S3, each section of cable protection pipe is sequentially transferred from the tug to the operation platform using the platform crane.
According to a preferred embodiment of the present invention, the step S5 includes a pre-clasping stage, where the pre-clasping is performed by closing the clip and partially fixing, so as to fine-tune the angle of the cable sheath.
According to a preferred embodiment of the present invention, in the step S5, a clasping stage is further included, where the clasping stage is that the installation angle of the cable protection tube is consistent with the design angle, and all the clips are fixed.
According to a preferred embodiment of the present invention, in the step S5, the clip includes an above-water clip and an under-water clip.
The invention has the technical effects that:
1. the invention relates to a post-installation method of a cable protective tube, which comprises the steps of prefabricating the cable protective tube in sections on land, erecting an operation platform and a hoisting structure, welding and assembling the segmented cable protective tube on the operation platform, adopting a hoisting mechanism to invert the cable protective tube to be parallel to jacket legs, slowly approaching the jacket legs, and fixing the cable protective tube by clamps which are arranged on the jacket legs in advance, thereby realizing the beneficial effects of segmented hoisting and inverted chain hoisting in place.
2. According to the rear installation method of the cable protection pipe, disclosed by the invention, the rear installation operation of the cable protection pipe can be completed only by means of resources such as the chain block, the operation platform and the like, floating crane resources are not needed in the rear installation process, and the hoisting cost is reduced.
3. According to the rear mounting method of the cable protective tube, disclosed by the invention, the turning over and accurate positioning of the cable protective tube can be completed only by using the chain block, and the cable protective tube does not need to be subjected to air back-off, so that the operation risk and difficulty are reduced.
4. The rear mounting method of the cable protective tube disclosed by the invention adopts sectional transportation, does not need to use a large tugboat to integrally transport the cable protective tube, and is more convenient and quick.
Drawings
FIG. 1 is a process schematic of a post installation method of a cable grommet according to the present invention;
fig. 2 is a schematic diagram of the result of a post-installation method of the cable duct of the present invention.
Reference numerals: 1-blocking; 2-jacket legs; 3-a water clip; 4-underwater clip; 5-a cable protection tube; 6-chain pouring; 7-hanging strips; 8-lifting lugs; 9-cableway.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
As shown in fig. 1 and 2, a method for installing a cable protection tube after installation should use the following steps:
step one: scaffold, welding bracket and operating platform are erected on the jacket legs 2 and the cableway 9 near the rear installation position of the cable protective tube 5;
step two: a plurality of lifting lugs 8 are respectively welded on jacket legs 2 above the operation platform and below the bottom deck of the block 1, and a clamping ring, a chain block 6, a hanging strip 7 and the like are arranged on each lifting lug 8;
step three: transporting the cable protection tube 5 prefabricated on land sections to a platform by a tugboat;
step four: the platform crane is used for sequentially transporting each section of cable protection tube 5 from the tugboat to the operation platform, and the cable protection tubes are orderly and horizontally arranged;
step five: welding and assembling the segmented cable sheath 5 on an operation platform, and checking welding seams of the segmented cable sheath;
step six: lifting the horizontally placed cable protection tube 5 from the operation platform by adopting a chain block 6, a hanging strip 7 and the like;
step seven: removing the operation platform and removing other barriers affecting construction on site;
step eight: the constructor opens the pre-installed water clip 3, and the diver opens the pre-installed underwater clip 4;
step nine: the cable protection tube 5 is turned over and drained through adjusting the chain block 6, and is slowly turned from a horizontal state to a state parallel to the jacket legs 2;
step ten: the cable protection tube 5 is slowly close to the jacket leg 2 by adjusting the chain block 6, so that the cable protection tube is accurately positioned;
step eleven: closing the water clamp 3 and the underwater clamp 4, installing partial bolts, and pre-holding the cable protection tube 5 through the clamps;
step twelve: finely adjusting the angle of the cable protective tube 5, and accurately measuring to ensure that the installation angle is consistent with the design angle;
step thirteen: all bolts of the water clamp 3 and the underwater clamp 4 are screwed;
step fourteen: cleaning the construction site and finishing the post-installation of the cable protection tube 5.
The first step is to weld brackets and set up an operation platform at the position of the cable pavement 9, and the set up operation platform is not too wide and too large according to actual conditions, so that the horizontal assembly and welding of the cable protection tube 5 can be met.
In the step three, when the cable protective tube 5 is prefabricated in a land subsection, the factors such as the total length of the pipeline, the length of the transport vehicle, the deck area of the transport ship, the capability of the platform crane, the welding workload of marine assembly and the like are comprehensively considered when the average length of each section is determined, and the prefabrication of each section is generally recommended according to 6-8 meters.
Step eight is typically where the diver is launched from the platform and all diving support equipment is placed on the platform, thereby saving the diving support vessel.
The step ten is to complete the accurate positioning of the cable protective tube 5 under the cooperation of divers and constructors.
Step eleven, when the cable protection tube is pre-held tightly, the main purpose is that: firstly, checking coaxiality of all clips, and if some underwater clips are difficult to close, the diver should adjust the clips; and secondly, whether the angle of installation behind the cable protection tube is consistent with the design angle is checked, and the cable protection tube can be conveniently rotated by the incomplete clasping of the clamp.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (1)
1. A method of post-installation of a cable grommet, comprising the steps of:
s1: an operation platform is erected at the positions of jacket legs and a cable-carrying walkway near the rear installation position of the cable protection tube;
s2: welding a plurality of lifting lugs on jacket legs above an operation platform and below a block bottom deck respectively, and installing a clamping ring and a hoisting machine on each lifting lug;
s3: conveying the segmented prefabricated cable protective tube to an operation platform, and then welding and assembling the segmented cable protective tube;
s4: lifting the horizontally placed cable protection pipe from the operation platform by adopting a lifting machine, and then dismantling the operation platform;
s5: opening a clamp which is arranged on the jacket leg in advance, adjusting the hoisting machinery to convert the cable protective tube into a state of being parallel to the jacket leg, gradually approaching the jacket leg, closing the clamp and fixing;
in the step S1, scaffold and welding bracket are further erected at the positions of the jacket legs and the cableway;
in the step S2, the hoisting machine is a chain block;
in the step S3, the length of each section of the segmented prefabricated cable protective tube is 6 to 8 meters;
in the step S3, each section of cable protection tube is sequentially transferred from a tug to an operation platform by using a platform crane;
in the step S5, a pre-enclasping stage is included, wherein the pre-enclasping stage is to close a clamp and fix part of the clamp, and fine-tune the angle of the cable protection tube;
in the step S5, a clasping stage is further included, wherein the clasping stage is that the installation angle of the cable protection tube is consistent with the design angle, and all the clips are fixed;
in the step S5, the clips include an on-water clip and an under-water clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296093.3A CN114156784B (en) | 2021-11-03 | 2021-11-03 | Post-installation method of cable protection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296093.3A CN114156784B (en) | 2021-11-03 | 2021-11-03 | Post-installation method of cable protection tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114156784A CN114156784A (en) | 2022-03-08 |
| CN114156784B true CN114156784B (en) | 2024-03-22 |
Family
ID=80458928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111296093.3A Active CN114156784B (en) | 2021-11-03 | 2021-11-03 | Post-installation method of cable protection tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114156784B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0607847A1 (en) * | 1993-01-19 | 1994-07-27 | KSB Aktiengesellschaft | Manhole for a cylindrically-shaped pump |
| CN101363218A (en) * | 2007-08-06 | 2009-02-11 | 中国海洋石油总公司 | Installation method of riser clip on offshore jacket |
| CN105157085A (en) * | 2015-07-29 | 2015-12-16 | 任春雷 | Heating and ventilation pipeline segmentation method |
| CN105782568A (en) * | 2016-03-29 | 2016-07-20 | 中国海洋石油总公司 | Mounting method of stand tube and protection tube |
| CN106379488A (en) * | 2016-09-19 | 2017-02-08 | 中国海洋石油总公司 | Method for quickly carrying out floating installation of platform at sea |
| CN106641464A (en) * | 2016-12-16 | 2017-05-10 | 中国海洋石油总公司 | Fixing process of pipeline bracket |
| CN108590547A (en) * | 2018-03-01 | 2018-09-28 | 深圳海油工程水下技术有限公司 | Standpipe installation method |
| CN111706714A (en) * | 2020-06-22 | 2020-09-25 | 中国海洋石油集团有限公司 | Installation method of vertical pipe protection frame |
-
2021
- 2021-11-03 CN CN202111296093.3A patent/CN114156784B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0607847A1 (en) * | 1993-01-19 | 1994-07-27 | KSB Aktiengesellschaft | Manhole for a cylindrically-shaped pump |
| CN101363218A (en) * | 2007-08-06 | 2009-02-11 | 中国海洋石油总公司 | Installation method of riser clip on offshore jacket |
| CN105157085A (en) * | 2015-07-29 | 2015-12-16 | 任春雷 | Heating and ventilation pipeline segmentation method |
| CN105782568A (en) * | 2016-03-29 | 2016-07-20 | 中国海洋石油总公司 | Mounting method of stand tube and protection tube |
| CN106379488A (en) * | 2016-09-19 | 2017-02-08 | 中国海洋石油总公司 | Method for quickly carrying out floating installation of platform at sea |
| CN106641464A (en) * | 2016-12-16 | 2017-05-10 | 中国海洋石油总公司 | Fixing process of pipeline bracket |
| CN108590547A (en) * | 2018-03-01 | 2018-09-28 | 深圳海油工程水下技术有限公司 | Standpipe installation method |
| CN111706714A (en) * | 2020-06-22 | 2020-09-25 | 中国海洋石油集团有限公司 | Installation method of vertical pipe protection frame |
Non-Patent Citations (2)
| Title |
|---|
| "后装立管海上吊装计算分析及安装工艺";赵刚 等;《科技与企业》;第125-126页 * |
| "基于空气潜水的浅水立管安装新工艺";卢维强 等;《中国新技术新产品》;第86-88页 * |
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| Publication number | Publication date |
|---|---|
| CN114156784A (en) | 2022-03-08 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230625 Address after: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant after: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant after: COOEC SUBSEA TECHNOLOGY Co.,Ltd. Address before: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant before: OFFSHORE OIL ENGINEERING Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| CB02 | Change of applicant information |
Address after: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant after: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant after: CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd. Address before: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant before: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant before: COOEC SUBSEA TECHNOLOGY Co.,Ltd. |
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| GR01 | Patent grant |